“Everything that works in sales has been done already. Just keep track of the crap that you buy, or the awesome stuff that you buy, and decide what was the trigger, and then just sell to people like you. It's really that easy - and that's what I do.”

American entrepreneur, investor, author, podcaster

Timothy Ferriss is an American entrepreneur, investor, author, podcaster, and lifestyle guru. He is known for his 4-Hour self-help book series, including The 4-Hour Work Week, The 4-Hour Body, and The 4-Hour Chef. Those books made him widely known for advice on optimizing everyday life, though he has since reconsidered that approach. He has also supported scientific research into psychedelic treatments, extending his public work beyond the self-help genre.